3 years ago

Pleaseeee help!!!! I will mark you as brainlinest for correct answer!!!!

1 answer:

5 0

Yes, your answer is correct.

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zavuch27 [327]

There are 5 flowers in the last vase because you divide 878 by 9 and get 97 and then you have 5 leftover

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3 years ago

dimaraw [331]

Answer: 5.37

Step-by-step explanation:

Let x = ACT scores.

Given: ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately normal.

i.e. P(X>28)=0.09 (i)

Now,

$P(X>28)=P(\dfrac{X-\mu}{\sigma}>\dfrac{28-20.8}{\sigma})\\\\= P(z>\dfrac{7.2}{\sigma})\ \ \ \ [z=\dfrac{X-\mu}{\sigma}]$ (ii)

One -tailed z value for p-value of 0.09 =1.3408 [By z-table]

From (i) and (ii)

$\dfrac{7.2}{\sigma}=1.3408\\\\\Rightarrow\ \sigma=\dfrac{7.2}{1.3408}\\\\\Rightarrow\ \sigma=5.37$

Hence, the standard deviation = 5.37

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3 years ago

Oksi-84 [34.3K]

Q=x/5-4

let me know if you have any questions

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3 years ago

velikii [3]

Your answer is the matrix with the top row of -8 20 0 and bottom row of
4 32 -4

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3 years ago

Helen [10]

Answer:

make all the numbers have the same denominator, then simply see what multiplies to equal both fractions. your answer should be -3/10(1/5k+1)

Step-by-step explanation:

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3 years ago